Lindemann 102077 18 Inches x 18 Inches Sealtight Damper

The Seal Tight Damper is constructed of cast-aluminum and stainless steel which means this damper won't rust or corrode. It is American made right in Atlanta Georgia. It features a comprehensive silicone seal gasket and solid silicone rubber gasket that seals virtually 99 percent of the damper frame. The design of the gasket means this damper is less likely to freeze shut than dampers of similar construction. This full seal makes the Seal Tight an energy efficient solution saving hundreds on energy bills. It provides a complete shield between the inside paid heat and air conditioning and the outside temperatures. Outside noises are kept to a minimum. It includes an easy to use finger touch control as a result of the lid being precisely balanced and hinged. The damper opening is also maximized providing up to 15 percent more airflow than the competition. It includes a 30ft cable and all mounting hardware. This 18in X 18in Seal Tight Damper fits inside flue tile dimensions from 15in X 15in up to 17.75in X 17.75in. A 13in X 13in damper is shown.